I Can't Comprehend

The things I
can't comprehend are many.
Produced in a factory
and sold in bulk.
Dished out to coustumers
as free samples.
If only they can tell me
what they think of the product.
Then there are the ads:
stapled to trees
or handed out as flyers.
A constant reminder of the things
I just cannot comprehend.
And these things are many.